Circular-knitting machine



(No Model) 4 Sheets-Sheet 1 J. H; PLACE. CIRCULAR KNITTING MACHINE.

No; {166,369. Patented-Jan. 5, 1892.

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J. H. PLACE.

GIRGULAR'KNITTING MACHINE.-

No. 466,369. Patented Jan. 5, 1892.

NVENTOK JOHN H6PLACE,

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(No Model.)

J. EL-PLACH- CIRCULAR KNITTING MACHINE- No. 466,369. Patented Jan. 5,1892.

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HLPLAGE.

- CIRCULAR KNITTING MACHINE.

Patented Jan. 5, 1892.

e to e NVENTOR ,JDHNktrl/ici 13x5 his cddcovnc UNITED STATE JOHN H.PLACE, OF DECATUR, ILLINOIS.

PATENT OFFICE.

CIRCULAR-KNITTING 'MACHINE.

SPECIFICATION forming part'of Letters Patent No. 466,369, dated Januaryv5, 1892.

, Application fil ed January 2, 1891 SerialNo. 376,465. (no model.)

To all whom if may concern:

Be it known that I, JOHN H. PLACE, of Decatur, in the county of Maconand State of Illinois, have invented certain new and useful Improvementsin Circular-Knitting Machines, of which the following is aspecification.

This invention consistsin the combinations, details of construction, andrelative arrangements of parts hereinafter set forth and claimed, theobject being to construct a ma- I chine on which two fabrics may besimultane- .Fig. 2 is a plan of the same.

ously formed and interknitted together,- and on which ordinary fabricmay be knitted in the customary manner.

It is also the object to improve certain details of construction in suchmachines.

The method of knitting and the fabric produced by this machine form thesubjects of an application for patent serially numbered 376,464, filedJanuary 2, 1891.

In the drawings accompanying and forming a part of this specification,Figure 1 is an elevation of amachine embodying myinvention. Fig. 3 isaplan of the hold-down dial. Fig. 4 is a plan of the cam-plate of thehold-down dial. Fig. 5 is a section on broken line X in Fig. 4:. Fig. 6is a representation of the under side of the camplate, showing both camsat one side of the plate. Fig. 7 is a similar representation showing onecam on each side of the plate. Fig.

8 represents a hold-down-hook adapted to one cam of the plate. Fig. 9represents a hold-down hook adapted to the other cam of plate. Fig. 10is a section of the cam-cylinder, showing the upper set of cams, andadja cent to such section are needles adapted to the upper cams. Fig.11, is a section of the cam-cylinder, showing the opposite side thereofand the lower set of cams, and adjacent thereto are needles adapted tothe lower set of cams. Fig. 12 is a section of the cam-cylinder cuttingboth sets of cams centrally. Fig. 13 is a diagram showing thearrangement of the needles in the cylinder. p

The cam-cylinder is composed of a lower part 1 and an upper part 2, eachpart having a. set of cams, and the upperpart having rotative adjustmenton the lower part.

The needles of needle-cylinder 25 are of three kinds, as shown in Figs.10 and 11, one

set n being short enough to engage the upper cams of the cam-cylinder,another set 1?. being long enough to engage the lower cams, and thethird set n having heels adapted to both sets of cams. The needles n ofthe first set are arranged continuously on one side of theneedle-cylinder. The needles n of the second set are arrangedcontinuously on the opposite side of the cylinder, and of the third setone needle m or possibly more, is interposed at each junction of theprincipal sets. The upper part of the cam-cylinder has an annular ledge2 as seen in the sectional views, and band 3, which is secured to thelower part of the cylinder, has an inwardly-projecting ledge 3, whichoverlaps ledge 2 and secures the two parts together While permittingindependent rotation therein. Aboltat slides vertically in a housing 6,and has a knob 5, by means of which it is raised, and it also has aspring (not shown) which tends to hold it depressed. The band 3 has atpoints diametrically opposite two lock-recesses adapted toreceive theend of the bolt, and the recesses hear such relation to the cams thatwhen the bolt is in one recess the upper cams of the cam-cylinder aredirectly over the lower cams, and when the bolt is in the other recessthe upper cams are opposite the lower ones.

, The supports 7 for yarn-carriers 8 may be constructed as shown, or inany other desirable and well-known manner, and they are secured to theupper part of the cam-cylinder in the usual manner.

The cam-plate for dial 10 is composed of outer ring 9, provided withdraw-out cam 21, and inner ring 15, provided with cam 22. The outer ringhas peripheral recesses 9, through which the supports of theyarn-carriers extend, and the sides of such recesses have buffers 17,preferably of rubber, secured by cement. Throw-in cams 11 are securedone to each sideof ring 15. They each have spurs 14,- which extend overthe outer ring, and such spurs are slotted at 12 to receive the screwsl3 and to permit the throw-in cams to be adjusted radially with relationto the cylinder. The inner ring extends under the outer ring, as seen inFig. 5, and this extension, together with spurs 14: cures the two ringstogether. The draw-out cams 21 and 22 are, like the knitting-cams,

of cams 11, so

held both at one side of the dial, or one directly opposite the other,and any suitable form of catch may be employed to secure the rings intheir different positions with relation to each other. Such a device mayconsist of two diametrically-opposed semicircular recesses in the innersurface of the outer ring, as seen at 18 in Fig. 2, a singlesemicircular recess in .the periphery of the outer ring, and a pin as isadapted to the hole formed by the conjunction of the recess of the innerring with a recess of the outer ring. It may also consist of inclines,as 19 in Fig. 4, having intermediate lock-recesses and a spring-catch,as 20, adapted to the lock-recesses.

The dial-plate has two sets of hold-down hooks 16 and 16, one of whichis arranged on one side of the dial and is adapted to be actuated by thedraw-out cam of the outer ring and the other of which is arranged on theopposite side of the dial and is adapted to be actuated by the draw-outcam of the inner ring. The hooks are the same in their construction,except that the heels 0c of one set are farther from the hook ends thanare the heels of the other set. (See Figs. 8 and 9.) The cams of thecylinder have the shiftable parts 1 and 2 the pivot-pins of which extendthrough the cylinder and have on their outer ends weighted levers 23 and24, as seen in Fig. 1, which tend to depress the points of the shiftableparts and which are not affected by an accumulation of dirt or othermatter inside the cylinder. The short needles have long heels 41 as seenin Fig. 10, and the long needles and the interknitting needles haveheels n of ordinary length. The lower part of the camcylinder has theusual relative internal diameter, from the surface of which the camsproject inwardly to the customary distance. (See 1 in Fig. 12.) Theupper half of the cam-cylinder coincides at its lower end with theinternal diameter of the lower half, as seen at 2 but its upper portionis of greater internal diameter, as seen at 2,and its cams aresufficiently thick to compensate for the increased diameter. Thisconstruction is shown throughout the sectional drawings;bnt is moreclearly apparent in Fig. 12, where both sets of cams are shown in truevertical alignment. The enlarged internal diameter of the upper portionof the upper half of the cam-cylinder forms ledge 2, which is adapted tosupport the elongated heels of the short needles, and a continuation ofthe cam of the lower half of the cylinder forms ledge 1, which isadapted to support the heels of the long needles. The reason for thisconstruction is that all the needles may be raised and lowered,when thecams are placed in the position shown in Fig. 12, as easily and quicklyas a machine having a single cam-cylinder.

\Vhile the machine is performing its chief function--that is, making twofabrics joined together by interknittingthe knitting-cams are placed oneset on each side of the cylinder and the draw out cams of the hold-downhooks are similarly arranged. Yarn is supplied to both carriers, suchyarns differing ordinarily in thickness or color, or both, and theknitting is effected by reciprocating the cam-cylinder to a degreesufficient to carry each yarn past each interknitting-needle at eachoperation. \Vhen the cam-cylinder is arranged as shown in Fig. 12,thecams of the hold-down hooks are placed as seen in Fig. 6, and oneyarmcarrier only is supplied with yarn, and rotation of the cam-cylinderwill knit ordinary fabric. hen it is not desired to operate thehold-down books, the throw-in cams 11 may be adjusted, as seen in Figs.:1: and 7. a.

Buifers 17 are made of rubber or other yielding substance; but otherforms of springs may obviously be substituted therefor.

I claim- 1. A circular-knitting machine containing a camcylinder havingtwo sets of cams and a needle-cylinder having on one side needlesadapted to one set of cams, on the other side needles adapted to theother set of cams, and also having intervening needles adapted to bothsets of cams, as set forth.

2. A circular-knitting machine containing a two-part cam-cylinder, onepart of which is 5 above and rotatively adjustable on the other, a setof cams in each part of the cam-cylinder, and three sets of needles, onesetof which is adapted to one set of .cams, another set of which isadapted to the other set of cams, and the third set of which is adaptedto both sets of cams, as set forth.

3. In circular-knitting machines, the combination of a two-partcam-cylinder, one part of which is rotatively adjustable on the other, aneedle-cylinder having on one side needles adapted to one set .of cams,on the other side needles adapted to the other setot' cams, and

1 intermediate needles adapted to both sets of cams, a dial having twokinds of hold-down hooks, throw-in cams for the hold-down hooks, and tworotatively-adj ustable draw-outcams, one cam being adapted to one kindof hooks and the other cam being adapted to the other kind of hooks, asset forth.

4. The combination of the dial, the holddown hooks, the tworotatively-adjustable draw-out cams, and the radially-adjustablethrow-in cams, as set forth.

In testimony whereof I sign my name in the presence of two subscribingwitnesses.

JOIIN II. PLACE. Attest:

I. D. WALKER, L. P. GRAHAM.

IIO

